Improvement in mechanism for stopping the loom when a -warp breaks



anni obtint.

vWIN H. Fl'ilTS., OF NORTHBOROUGH, MASSACHUSE'FES.

Letters .Patent No. 91,050, duted'une 8, 1869.

IMPROVEIENT IN MECHANISM FOR STOPPING- THE LOM WHEN A WARE BREAKS.

. The Schedule referred to in these Letters Patent and making part of the-saline.

To all whom-'it 'may concern 'Be it known that I, Jolis J. Swuznn, of Chelsea, in the county of Snil'olk, and State of Massachusetts, have invented a new and improved Stop-Motion for Looms; and I do hereby deciarethat 'the followinr is Figuresd and 5, Sheet III,` are detailed side views of weights used oil the warirthrcads. 1'

. Similar" letters of reference indicate corresponding parts.

This invention relates to al new thread-detector and stop-motion for looms, whereby the injury to fabrics, produced by the breaking of threads, is instantly prevented by the stopping of the machinery.

The present invention is an improvement on that for which Letters Patent, No. 80,885, were `granted to me, on the 11th day ofAiignst, 156B. its advantage over that described in the aforos-.iid Letters Patent is, that the winp .can be easier applied to a new harness than it could be where the wings are used.

v A, in the drawing,represents the frame of a loom, of ordinary or suitable'ionstruetion.

B is the main driving-shaft, having,r its bearings-in l the frame A, and imparting, by suitable connectingrod's, inotion .to the hatten-frame (l, which is suspended in the `ordinal-yor suitable. manner.

vI) D are the llarness-iieddles, arranged as nsnal,and operated by suitable mechanism.

E E are the warp-thrczuls. They are ittcd over rollers and through the buddies, as usual.

From each of the warp-thre-adsV is snspendeda long weight, F, which may he made of wire or other snit-ablc material, and v-hichhas either turned-down upper ends, as in iig. 4, or an eye, as in iig. 5. That kind which is shown in 4 ran bo applied to the threads after the same .are stretched, while the others have to lu: held opposite the heddle-slots, to have the threads drawn through thcns. v I

The hatten is, by means of a bell-crank, G, which is plv-tell to the frame A, connected with the upwardprojecting arm b ofa vertical slide, il, said slide workini,r in a fixed frame, I,that i arranged at one end of the frame A., as shown.

la front of the slide 1I is arranged, in the frame I,

"the slide H up and down.

. .By the oscillating motion of the hatten, rea-iproeitiia;` motion is imparted to the another uprightslidc,5, which is, by means of a rod, d, connected with a lever, K, which is pivotcd to the frame A, 'said lcvcr being, by means of a cord, e, connected with the shipper-bin' L, said shipper-bar beingv connected with the belt driving the shaft B, as indicated in iig. l.

Froni the. hatten projects downward a rod, j', having a horizontal arm, through an eye, g, of a bell-crank,`

M, that is pivotcd under the loom, as shown in iig. l.

This bell-crank is, by means of a link-or rod, h, connected with a slotted frame, N, which is arranged under thc. warp-threads, its slots being-ptn'ai-lcl with the threads, as shown.

During each backward stroke of the hatten, the crank M will be swung, so as to draw the frame N toward the frame. l.

A spring, i, serves. to draw the frame N back again, during the h'aclnvard motion cfthe hatten.

Above and below thc frame N are similar slotted fraine, O O, which inove'in grooves in the stationary frames, but which are not'conncetcd with the frame N, so as to be moved by the same.

From the ripper frames O projects a spring-arm,j, which is connected with or fits aga-inst a leve-r, k, that is pivoted to the side of the frame I.

The lever l: is, by a: rod, i, connected with the crank of a roclcshafl, nathan has its bearings in the frame l, as shown.

Freni the shaftin. projects an arm, n, that fits against; a hook, u, which is pivotcd to thc slide J.

The operation is as follows:

During the ordinary progress of the weaving-process, the -frame will be inovoliback and forth, and As soon, however, as a thread, l5, breal;s,ils weight 4'F will drop, and -will fall into the frames O N 0,-as `shown in lig. il', thereby connecting the frames.

As' soon as the hatten is again drawnl back, the franic N will, by means of this connection, carry the frames O O with it, and will thereby cause the arnij to swing the lever lv. llhv this swinging motion of the lever' lf, thc rock-shaftl iawill also be swung, so as to canse .its arni nV to be pressed against the hoek o, as is clearly shown in lig. 2. he hook will thereby be pushed under thc slide il, so that when that slide is moved downward, dnring; thc-next forward stroke of the bat-ten, it will strike against the shoulder of the hook, and will cari y the slide J down with it.

By'this downward niotion of the slide J, thc lever,

k will be s\vung,which will pull the cord c, so as to move-tho shipper-har, to shllt the belt upon the loose pulley.

Thus, :is soon as a thread breaks, tho belt will be shifted upon the loose pulley, and' the machinery will be stopped'.

After the .thread has been repaired, the bar L is moved again, to replace the belt en the iixedA pulley, and to restart the machinery.

P is an arm, projecting from one of the frames 0,

' and catching against 4any suitable part of the frame or mechanism, to prevent such frame Ofrom being drawn back too far. The arm j mightotherwise be'entirely- -disconnected from the lever lc.

The saine springs that draw. back the'fiameN serve also to drawback the frames O, or other separate springs may be used forthat purpose. 1

As soon as, by the baclnvaI-d motion of the frame O, thearm nis withdrawn from the hook @the latter will again drop forward, out of the waybf the slide H,

apart by 'horizontal rods RR, as slicvvn.

The weights F, while on the threads,`may Le held Having thus described my invention,

I claim as new,` and'desire to secure by Letti-:is Patentl. The hatten C, when connected, by means of the crank G, with the slide H, andby the erankM with the slotted frame N, so asrto impart reciprocating motionv to the same, as specified. ,Y

2. The slotted-frame N, when connected with thespring i and with the hatten C, substantially as herein shown and described, and for the purpose specified.-

3. The frame '0, arm j, lever k, and rod l, combined i with a rock-shaft, m, which has 'the ann n, substantialiy as described, so that by the motion of the frame O the arm n will he moved toward and againstthe hook 0, substantially as herein shown and described..- j lThe above specification of my invention signed .Jy

me, this 28th day of October, 18.68.

JOHN J. svvl'lfziais..v

Witnesses: V

FRANK BLOCKLEY,

E. GREENE COLLINS. 

